When I run 21.02.0, everything pretty much works. It doesn't support Wifi 6, though, so I wanted to find a snapshot that does.
I've tried running the snapshot built on Sat Oct 23 09:38:22 2021, but it seems like it completely fails to detect any wireless devices. If I start with a fresh config, the "wireless" menu option in LuCI doesn't appear at all, and if I use my existing config, then it doesn't detect the radios and just shows the networks I've set up as dissassociated.
I'd be willing to debug this, but right now my main question is just - does anyone else have an OpenWRT snapshot running on a Unifi 6 Lite with a working WiFi 6 signal, and do you know your snapshot date so I could build it locally & reproduce?